Diagnostic Mode 02 - Read Operating Conditions
When an emission related fault (pending DTC, visible in mode 07) is first detected, the operating conditions are stored. Mode 02 makes it possible to access this freeze frame data as soon as this fault is shown in mode 03. Each control module only shows freeze frame data for one fault via mode 02. Therefore, there are two priority levels. If there is a malfunction with a higher priority, the freeze frame data is overwritten.
-- Higher priority faults are misfire or fuel trim malfunctions.
-- Normal priority faults are all other emission related faults.
Depending on scan tool and protocol used, the information in diagnostic mode 02 may be referred to by different names such as Test-ID (TID), Hex-ID, Component-ID (CID), or On-Board Diagnostic Monitor Identifier (OBDMID).
Procedure
-- Connect the scan tool.
-- Start the engine and run at idle.
If the engine does not start, crank the engine using starter for at least 5 seconds, do not switch the ignition off afterward.
-- Select "Diagnostic Mode 2: Obtain operating conditions."
-- From the following table, select the desired the "PID", e.g. "PID $05 Coolant temperature" that is to be monitored.
The current values of the component or system that is being monitored will be displayed on the scan tool screen.
| PID | Component or System |
|---|---|
| $02: | DTC which triggered Freeze Frame data |
| $04: | Calculated load value |
| $05: | Coolant temperature |
| $0C: | Engine RPM |
| $0D: | Vehicle speed |
| $0F: | Intake Air Temperature |
| $10: | Air flow rate |
| $11: | Throttle 1, sensor 1, throttle position absolutely |
| $1F: | Time after engine start |
| $23: | Fuel pressure |
| $2C: | Commanded EGR Position |
| $2D | EGR error between Actual and Commanded |
| $2F | Tank level |
| $33: | Barometric kPa pressure |
| $42: | Engine Control Module system voltage |
| $45: | Relative Throttle Valve position |
| $46: | Ambient temperature |
| $49: | Absolute Pedal Position 1 absolute |
| $4A: | Absolute Pedal Position 2 absolute |
| $4C: | Commanded Throttle Motor Position |
| $51: | Fuel type |
| $5C | Engine oil temperature |
| $5D: | Injection crank angle |
| $5E: | Fuel consumption |
| $61: | Driver torque input |
| $62: | Current torque |
| $63: | Reference torque |
| $67: | ECT temperature 1 and 2 |
| $69: | EGR position |
| $6B | EGR temperature |
| $6D: | Fuel rail pressure |
| $70: | Boost pressure |
| $71: | Turbocharger adjustment position |
| $78: | Exhaust temperature 1 - 4 |
| $7A: | Diesel particulate filter pressure differential |
| $85: | NOx control system |
| $8B: | Diesel exhaust after treatment status |
-- Switch the ignition off.